/**
  * Set the context. Overrides this method for a macro
  *
  * @see org.w3c.css.css.CssCascadingOrder#order
  * @see org.w3c.css.css.StyleSheetParser#handleRule
  */
 public void setSelectors(CssSelectors selector) {
   super.setSelectors(selector);
   if (top != null) {
     top.setSelectors(selector);
   }
   if (right != null) {
     right.setSelectors(selector);
   }
   if (bottom != null) {
     bottom.setSelectors(selector);
   }
   if (left != null) {
     left.setSelectors(selector);
   }
 }